:root {
  --ink: #071525;
  --navy: #0b1f3a;
  --navy-mid: #123b6b;
  --gold: #c9a86a;
  --gold-soft: rgba(201, 168, 106, 0.35);
  --mist: #e8f1ff;
  --text: #d7e4f7;
  --muted: rgba(215, 228, 247, 0.68);
  --line: rgba(232, 241, 255, 0.12);
  --max: 1120px;
  --font-display: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
    "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei",
    sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  color: var(--text);
  background: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 700px at 18% -10%, rgba(18, 59, 107, 0.7), transparent 60%),
    radial-gradient(900px 600px at 88% 12%, rgba(201, 168, 106, 0.12), transparent 55%),
    linear-gradient(180deg, #071525 0%, #0b1f3a 42%, #08182c 100%);
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.55;
  animation: breathe 8s ease-in-out infinite;
}

.glow-a {
  width: 340px;
  height: 340px;
  left: 8%;
  top: 12%;
  background: rgba(70, 130, 210, 0.22);
}

.glow-b {
  width: 280px;
  height: 280px;
  right: 10%;
  top: 18%;
  background: rgba(201, 168, 106, 0.14);
  animation-delay: -3s;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  backdrop-filter: blur(14px);
  background: rgba(7, 21, 37, 0.55);
  border-bottom: 1px solid transparent;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 650;
  letter-spacing: 0.08em;
}

.brand-mark img {
  border-radius: 7px;
  box-shadow: 0 0 0 1px var(--gold-soft);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.nav a:hover {
  color: var(--mist);
}

.nav-cta {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--gold-soft);
  border-radius: 999px;
  color: var(--gold) !important;
}

.hero {
  min-height: 100dvh;
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.5rem 1.25rem 3rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold);
  letter-spacing: 0.28em;
  font-size: 0.78rem;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.6rem, 9vw, 6.4rem);
  font-weight: 680;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--mist);
  text-indent: 0.14em;
}

.lede {
  margin: 1.35rem 0 0;
  max-width: 18em;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  color: var(--muted);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn.primary {
  background: linear-gradient(135deg, #d4b57a, #c9a86a 45%, #a8894d);
  color: #1a1205;
  font-weight: 650;
}

.btn.ghost {
  border: 1px solid var(--line);
  color: var(--mist);
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 420px;
}

.orb {
  position: absolute;
  width: min(420px, 80vw);
  height: min(420px, 80vw);
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(232, 241, 255, 0.18), transparent 55%),
    radial-gradient(circle at 60% 70%, rgba(201, 168, 106, 0.16), transparent 50%);
  filter: blur(6px);
  animation: breathe 7s ease-in-out infinite;
}

.hero-icon {
  position: relative;
  width: min(420px, 78vw);
  height: auto;
  border-radius: 28%;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(201, 168, 106, 0.22);
}

.band {
  max-width: var(--max);
  margin: 0 auto;
  padding: 5.5rem 1.25rem 1rem;
}

.band-tight {
  padding-top: 2rem;
}

.section-head h2,
.trust-panel h2,
.open-panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: 0.08em;
  color: var(--mist);
  font-weight: 650;
}

.section-head p,
.trust-panel p,
.open-panel p,
.feature p {
  color: var(--muted);
}

.section-head p {
  margin: 0.85rem 0 0;
  max-width: 28em;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2.4rem;
}

.feature {
  padding: 1.8rem 1.6rem;
  border-top: 1px solid var(--line);
}

.feature h3 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  font-weight: 600;
}

.feature p {
  margin: 0;
  max-width: 34em;
}

.trust-panel,
.open-panel {
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(18, 59, 107, 0.28), rgba(7, 21, 37, 0.2));
  border-radius: 24px;
  padding: clamp(1.6rem, 4vw, 2.8rem);
}

.trust-panel p {
  margin: 1rem 0 0;
  max-width: 42em;
}

.open-band {
  padding-bottom: 4rem;
}

.open-panel {
  text-align: center;
  display: grid;
  justify-items: center;
  gap: 0.85rem;
}

.open-panel img {
  border-radius: 18px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.open-panel h2 {
  letter-spacing: 0.06em;
}

.open-panel p {
  margin: 0;
  max-width: 28em;
}

.hint {
  font-size: 0.88rem;
  opacity: 0.8;
}

.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.footer strong {
  display: block;
  color: var(--mist);
  margin-bottom: 0.45rem;
  letter-spacing: 0.08em;
}

.footer p {
  margin: 0;
  max-width: 28em;
}

.footer-meta {
  display: grid;
  gap: 0.35rem;
  text-align: right;
  white-space: nowrap;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

.delay-1 {
  transition-delay: 0.12s;
}

.delay-2 {
  transition-delay: 0.22s;
}

.delay-3 {
  transition-delay: 0.34s;
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.75;
  }
}

@media (max-width: 860px) {
  .nav a:not(.nav-cta) {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 3rem;
    gap: 2rem;
  }

  .hero-copy {
    order: 1;
  }

  .hero-visual {
    order: 0;
    min-height: 280px;
  }

  .split {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
  }

  .footer-meta {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .glow,
  .orb {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}